Office 365 new domain name registration?

Hi,

I want to set up a brand new office 365 business essentials subscription new domain name from scatch.

So what I am trying to decide is if this is a good option to choose:

https://www.microsoft.com/en-us/microsoft-365/blog/2013/10/08/purchase-your-custom-godaddy-domain-directly-through-office-365/

So here you can purchase it straight from Office 365.

Now lets say I do this.

1. Where are the DNS records then managed from? From an inerface in Office 365 or do I then manage it from the GoDaddy web site?

In other words if I want to add a new host A record where is it done from.

2. Any disadvantages with this method as opposed to creating a GoDaddy account separately and registering my domain name in there first.

3. Am I then billed from Microsoft only or do I get separate ones from GoDaddy?

4. Does this create a GoDaddy login that I can then login there web site with?

Thanks,

Ward.